
<template>
  <div id="app">
    <!-- 头部 -->
    <mt-header fixed title="鱼不二·项目">
		<span slot="left" @click="goBack" v-show="flag">
			<mt-button icon="back">返回</mt-button>
		</span>
	</mt-header>

    <!-- 中间 -->
	<transition>
		<router-view></router-view>
	</transition>

    <!-- 底部 -->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item " to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item" to="/member">
				<span class="mui-icon mui-icon-email"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
					<span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
  </div>
</template>
<script>
export default {
	data() {
		return {
			flag:false
		}
	},
	created(){
		// 刚进入页面时不会触发路由的改变
		// 所有在页面加载完成后判断是否为/home地址
		this.flag=this.$route.path=='/home'?false:true
	},
	methods: {
		goBack(){
			// 点击后退
			this.$router.go(-1);
		}
	},
	watch:{
		"$route.path":function(newVal){
			if(newVal==="/home"){
				this.flag=false
			}else{
				this.flag=true
			}
		}
	}
}
</script>


<style lang="scss" scoped>
 #app{
	 padding-top: 40px;
	 padding-bottom: 40px;
	 overflow-x: hidden;
 }
.v-enter{
	opacity: 0;
	transform: translateX(100%)
}
.v-leave-to{
	 opacity: 0;
	 transform: translateX(-100%);
	 position: absolute;
 }
 .v-enter-active,.v-leave-active{
	 transition: all 0.5s ease;
 }
 .mint-header{
	 z-index: 99
 }
</style>
